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Groups > comp.lang.python > #32155
| From | Serhiy Storchaka <storchaka@gmail.com> |
|---|---|
| Subject | Re: bit count or bit set && Python3 |
| Date | 2012-10-25 22:07 +0300 |
| References | <5089511E.4090009@earthlink.net> <k6bllq$3gt$1@ger.gmane.org> <mailman.2849.1351179123.27098.python-list@python.org> <50896152$0$29978$c3e8da3$5496439d@news.astraweb.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.2861.1351192087.27098.python-list@python.org> (permalink) |
Chris Angelico's suggestion:
>>> bitcount = bytes(bin(i).count("1") for i in range(256))
>>> t = Timer('sum(number.to_bytes((number.bit_length() + 7) // 8,'
... '"little").translate(bitcount))',
... setup='from __main__ import bitcount; number=2**10001-1')
>>> min(t.repeat(number=10000, repeat=7))
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Re: bit count or bit set && Python3 Chris Angelico <rosuav@gmail.com> - 2012-10-26 02:31 +1100
Re: bit count or bit set && Python3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-25 15:57 +0000
Re: bit count or bit set && Python3 rusi <rustompmody@gmail.com> - 2012-10-25 09:17 -0700
Re: bit count or bit set && Python3 Chris Angelico <rosuav@gmail.com> - 2012-10-26 03:29 +1100
Re: bit count or bit set && Python3 rusi <rustompmody@gmail.com> - 2012-10-25 09:37 -0700
Re: bit count or bit set && Python3 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-10-25 17:44 +0100
Re: bit count or bit set && Python3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-25 17:16 +0000
Re: bit count or bit set && Python3 Serhiy Storchaka <storchaka@gmail.com> - 2012-10-25 22:07 +0300
Re: bit count or bit set && Python3 Neil Cerutti <neilc@norwich.edu> - 2012-10-25 20:00 +0000
Re: bit count or bit set && Python3 Neil Cerutti <neilc@norwich.edu> - 2012-10-25 20:04 +0000
Re: bit count or bit set && Python3 Ian Kelly <ian.g.kelly@gmail.com> - 2012-10-25 14:20 -0600
Re: bit count or bit set && Python3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-25 23:48 +0000
Re: bit count or bit set && Python3 Neil Cerutti <neilc@norwich.edu> - 2012-10-26 12:56 +0000
Re: bit count or bit set && Python3 Charles Hixson <charleshixsn@earthlink.net> - 2012-10-25 09:08 -0700
Re: bit count or bit set && Python3 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-10-25 22:51 +0100
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